[INFO] cloning repository https://github.com/seb-sep/rust-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seb-sep/rust-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseb-sep%2Frust-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseb-sep%2Frust-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e46bd0c064239bcfe2ffe62f8564bee67d6b501a
[INFO] checking seb-sep/rust-workshop against try#cd420d8bda33494ba3cc45048d5f067484a32b94 for pr-140209-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseb-sep%2Frust-workshop" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seb-sep/rust-workshop on toolchain cd420d8bda33494ba3cc45048d5f067484a32b94
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seb-sep/rust-workshop
[INFO] finished tweaking git repo https://github.com/seb-sep/rust-workshop
[INFO] tweaked toml for git repo https://github.com/seb-sep/rust-workshop written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/seb-sep/rust-workshop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02abe31fdb74f62876b2c84d87d611e8d68dfef4058c9583096bf4b5cab5a860
[INFO] running `Command { std: "docker" "start" "-a" "02abe31fdb74f62876b2c84d87d611e8d68dfef4058c9583096bf4b5cab5a860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02abe31fdb74f62876b2c84d87d611e8d68dfef4058c9583096bf4b5cab5a860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02abe31fdb74f62876b2c84d87d611e8d68dfef4058c9583096bf4b5cab5a860", kill_on_drop: false }`
[INFO] [stdout] 02abe31fdb74f62876b2c84d87d611e8d68dfef4058c9583096bf4b5cab5a860
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0f03dff36449495a676b36a637c003e7c2e5664b862c5c1217c88f06e494272
[INFO] running `Command { std: "docker" "start" "-a" "a0f03dff36449495a676b36a637c003e7c2e5664b862c5c1217c88f06e494272", kill_on_drop: false }`
[INFO] [stderr]     Checking workshop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `caps`
[INFO] [stdout]  --> src/iterators.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let caps: Vec<String> = strings.iter()
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_caps`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `caps`
[INFO] [stdout]  --> src/iterators.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let caps: Vec<String> = strings.iter()
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_caps`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `even_sum`
[INFO] [stdout]   --> src/iterators.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let even_sum = v.iter()
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_even_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `even_sum`
[INFO] [stdout]   --> src/iterators.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let even_sum = v.iter()
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_even_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `real_num`
[INFO] [stdout]   --> src/handling.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let real_num: &i32 = num.unwrap();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_real_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `real_num`
[INFO] [stdout]   --> src/handling.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let real_num: &i32 = num.unwrap();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_real_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let len = calculate_length(&s1);
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let len = calculate_length(&s1);
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Blockchain` is never used
[INFO] [stdout]  --> src/enums.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Blockchain {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chain_to_token` is never used
[INFO] [stdout]  --> src/enums.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn chain_to_token(chain: &Blockchain) -> &str {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WalletType` is never used
[INFO] [stdout]   --> src/enums.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum WalletType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_append` is never used
[INFO] [stdout]   --> src/enums.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn list_append(l: &mut Vec<WalletType>, wallet: WalletType) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enum_fun` is never used
[INFO] [stdout]   --> src/enums.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn enum_fun() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_fun` is never used
[INFO] [stdout]  --> src/iterators.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn iterator_fun() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `optional_fun` is never used
[INFO] [stdout]  --> src/handling.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn optional_fun() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Blockchain` is never used
[INFO] [stdout]  --> src/enums.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Blockchain {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chain_to_token` is never used
[INFO] [stdout]  --> src/enums.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn chain_to_token(chain: &Blockchain) -> &str {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WalletType` is never used
[INFO] [stdout]   --> src/enums.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum WalletType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_append` is never used
[INFO] [stdout]   --> src/enums.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn list_append(l: &mut Vec<WalletType>, wallet: WalletType) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enum_fun` is never used
[INFO] [stdout]   --> src/enums.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn enum_fun() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_fun` is never used
[INFO] [stdout]  --> src/iterators.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn iterator_fun() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `optional_fun` is never used
[INFO] [stdout]  --> src/handling.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn optional_fun() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "a0f03dff36449495a676b36a637c003e7c2e5664b862c5c1217c88f06e494272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0f03dff36449495a676b36a637c003e7c2e5664b862c5c1217c88f06e494272", kill_on_drop: false }`
[INFO] [stdout] a0f03dff36449495a676b36a637c003e7c2e5664b862c5c1217c88f06e494272